8 struct screen *tunnel_screen(void);
9 struct screen *fract_screen(void);
10 struct screen *grise_screen(void);
11 struct screen *polytest_screen(void);
14 static struct screen *scr[NUM_SCR];
15 static int num_screens;
17 static struct screen *cur, *prev, *next;
18 static long trans_start, trans_dur;
24 if(!(scr[idx++] = tunnel_screen())) {
27 if(!(scr[idx++] = fract_screen())) {
30 if (!(scr[idx++] = grise_screen())) {
33 if(!(scr[idx++] = polytest_screen())) {
38 assert(num_screens <= NUM_SCR);
40 for(i=0; i<num_screens; i++) {
47 /* Make the effect run first if it returns "CAFE" from ins init() */
53 printf("*** Screen %s displayed out of order ***\n", scr[0]->name);
59 void scr_shutdown(void)
62 for(i=0; i<num_screens; i++) {
69 if(prev) { /* we're in the middle of a transition */
70 long interval = time_msec - trans_start;
71 if(interval >= trans_dur) {
73 next->start(trans_dur);
87 struct screen *scr_lookup(const char *name)
90 for(i=0; i<num_screens; i++) {
91 if(strcmp(scr[i]->name, name) == 0) {
98 struct screen *scr_screen(int idx)
103 int scr_num_screens(void)
108 int scr_change(struct screen *s, long trans_time)
111 if(s == cur) return 0;
114 trans_dur = trans_time / 2; /* half for each part transition out then in */
115 trans_start = time_msec;
120 if(cur && cur->stop) {
121 cur->stop(trans_dur);